Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Plant Impact PLC

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

X

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please specify):

3. Full name of person(s) subject to the notification obligation:

The Throgmorton Trust PLC

4. Full name of shareholder(s)  (if different from 3.):

5. Date of the transaction and date on which the threshold is crossed or reached:

15th October 2010

6. Date on which issuer notified:

18th October 2010

7. Threshold(s) that is/are crossed or reached:

Holding has gone below 3%

8. Notified details:

A: Voting rights attached to shares

Class/type of shares

if possible using the ISIN CODE

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of Shares

Number of Voting Rights

Number of shares

Number of voting rights

% of voting rights

Direct

Direct

Indirect

Direct

Indirect

GB00B1F4K366

1,209,308

1,209,308

1,346,428

1,346,428

N/A

2.95%*

N/A

*Situation previous is based on an issued share capital of 31,432,103, resulting situation is based on an issued share capital of 45,654,109.

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments 

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date

Exercise/ Conversion period

Number of voting rights instrument refers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

1,346,428

2.95%

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable:

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will cease to hold:

12. Date on which proxy holder will cease to hold voting rights:

13. Additional information:

BlackRock Threshold Reporting Team

14. Contact name:

Stuart Watchorn

15. Contact telephone number:

020 7743 5741; [email protected]

Note: Annex should only be submitted to the FSA not the issuer

Annex: Notification of major interests in share

A: Identity of the persons or legal entity subject to the notification obligation

Full name

(including legal form of legal entities)

The Throgmorton Trust PLC

Contact address

(registered office for legal entities)

33 King William Street, London, EC4R 9AS

Phone number & email

020 7743 5741

Other useful information

(at least legal representative for legal persons)

Stuart Watchorn

B: Identity of the notifier, if applicable

Full name

BlackRock, Inc.

Contact address

33 King William Street, London, EC4R 9AS

Phone number & email

020 7743 5741; [email protected]

Other useful information

(e.g. functional relationship with the person or legal entity subject to the notification obligation)

C: Additional information